Are your deep water culture bucket single contained buckets? Or are you recirculating through a reservoir? The reason I ask, is there is a method of linking two buckets together and going twice as long between res changes. It's kind of a hybrid of a recirculating system.
Since I'm in Cocoa, I just use a big Reservoir and halo rings and pump over the top of my Coco. Then my plants sit on a drain table that collects 15 gallons of water under the table and every once in awhile as sump pump pumps that out into a drain tile outside.
If you decide to go double buckets on your deep water culture I can give you some ideas on how to do that. I did it in the past and it worked okay for extending my time away.
Ideally before you go on vacation you would have your plant set up for a week or two on your new system to make sure things were stabilized.